CNDB-16177: CNDB-15968: Fix flaky SAI tests by ensuring index queryability on all coordinators. Rename ambiguous waitForIndexqueryable() to waitForIndexQueryableOnFirstNode() and add coordinator-aware alternatives

[michaelsembwever]

https://github.com/riptano/cndb/issues/16177

Port into main-5.0 commit 64dbb98

CNDB-16177: CNDB-15968: Fix flaky SAI tests by ensuring index queryability on all coordinators. Rename ambiguous waitForIndexqueryable() to waitForIndexQueryableOnFirstNode() and add coordinator-aware alternatives

[github-actions]

Checklist before you submit for review

• This PR adheres to the Definition of Done
• Make sure there is a PR in the CNDB project updating the Converged Cassandra version
• Use NoSpamLogger for log lines that may appear frequently in the logs
• Verify test results on Butler
• Test coverage for new/modified code is > 80%
• Proper code formatting
• Proper title for each commit staring with the project-issue number, like CNDB-1234
• Each commit has a meaningful description
• Each commit is not very long and contains related changes
• Renames, moves and reformatting are in distinct commits
• All new files should contain the DataStax copyright header instead of the Apache License one

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[cassci-bot]

❌ Build ds-cassandra-pr-gate/PR-2165 rejected by Butler

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5 regressions found
See build details here

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Found 5 new test failures

Test	Explanation	Runs	Upstream
o.a.c.cql3.validation.operations.AggregationQueriesTest.testAggregationQueryShouldNotTimeoutWhenItExceedesReadTimeout (compression)	NEW	🔴	2 / 25
o.a.c.distributed.test.DropUDTWithRestartTest.loadCommitLogAndSSTablesWithDroppedColumnTestCC50	NEW	🔴	22 / 25
o.a.c.distributed.test.DropUDTWithRestartTest.loadCommitLogAndSSTablesWithDroppedColumnTestCassandra41	NEW	🔴	1 / 25
o.a.c.distributed.test.DropUDTWithRestartTest.loadCommitLogAndSSTablesWithDroppedColumnTestCassandra5	NEW	🔴	1 / 25
o.a.c.index.SecondaryIndexManagerTest.testIndexRebuildWhenAddingSStableViaRemoteReload (compression)	NEW	🔴	20 / 25

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No known test failures found